Valve-lock



L. PETERS.

VALVE LOCK.

APPLICATION man D50. 5, 1 919.

$339,412. Patented y 11,1920.

awmwtoz iii? 5km Wm mg LYLE PETERS, 0F DENVER, COLORADO. I

VALVE-LOCK.

Specification of Letters Patent.

Patented May 11, 1920.

Application filed December 5, 1919. Serial No. 342,804.

To all 'ZUhO/Ib it may concern: H

Be it known that I, LYLE PnTnRs, a citizen of the United States, residing at Denver, in the Colorado, have invented certain new and useful Improvements in Valve-Locks, of which the following is a specification.

The primary purpose of this invention is to control the supply of fuel to the carbureter of internal combustion engines whereby when the engine is at rest and unattended, the supply of fuel thereto may be cut off and the valve locked, thereby preventing the surreptitious operation of the valve and the unauthorized use of the machine embodying the invention.

The drawings illustrate a preferred embodiment of the invention. However, I desire it to be understood that in adapting the same to meet various conditions, changes may be made in the form, proportion and minor details of construction without departing from the nature of the inventionv as claimed hereinafter.

Referring to the drawings Figure 1 is a detail view of a lock valve embodying the invention, showing the same in the feed pipe between a carburetor and the supply or vacuum tank.

Fig. 2. is a vertical transverse section of the valve and lock showing the parts on a' larger scale and the valve in closed and locked position.

Fig. 3 is a front view of the valve and lock, the front plate being removed to-show the arrangement of the internal structure,

the parts being on the same scale as illusi eled end. of the bolt "19 to ride upon. The

trated in Flg. 2.

. Corresponding and like parts to in the following description and indicated in the several views of the drawings by like reference characters.

The reference letter A, designates a conventional type of carbureter, and B a supply tank from which the carbureter draws its supply, said tank being of the vacuum type and connected with a main or fuel tank by means of a pipe 1. A pipe 2 connects the vacuum manifold 'n a manner Well understood. The pipe 3 connecting the tank bureter A is provided in its length with the valve and cooperating lock therefor.

The valve comprises a casing. t and a plug 5, the latter being rotatably mounted in the casing and embodying a stemfi, head 7 and county of Denverand State ofare referred tank B with the intake B with the carbutton or hand piece 8. A collar 9 projects from the rear side of the casing 4 and is closed by means of a plate 10. 'The'stem Q Fig; 2, the; opening 12 is crosswise of the passage 13.v A groove 14 is formed in the outer edge of the head 7 and extends one fourth the circumference thereof. A lug 315.

enters the groove 14 and limits the turning of the valve .ineach direction. As shown most clearly in Fig. .3 of the drawings, the

valve is closed and held against movement in one directlon by means of the lug 15 and is prevented from turning in the reverse direotion by means of'a bolt When the bolt is withdrawn. from engagement with the groove 14 the valve is drawn into open position by means of the springl'l The "lock comprises a casing"1" which is closed at its front'by means oflate-l8.

' Within the casing is, disposed the bolt 16 and a cooperating bolt 19 both bolts" being directed in their movements and retained in place by lugs,

right ang e to the bolt 'leand is ada ted to project through an-opening 20 forme in. The lower end wall of the openin 20 is inclined, as indicated at 21.for the fievbolt 19 is held projected by means of an expansible helical-spring 2 2. The bolt 16 therepreferably forming a part of I the c'asin .17. The bolt 19 is disposed-fat a is held projected by means-of an ezipansible helical sprin 23. When'the bolt 16 is r0 jected into such position by meansof the bolt 19 as indicated most clearly in Fig. 3." A projection 24 extendslater'ally from the bolt 16 and constitutes a stop to limit thc forward movement of the 'boltfl9 and is also adapted to be engaged by the nib 25 of the key' o erated spindle or hub 26 which is rotatably. mounted in a boss formed as a part of the front plate 18. The key spindle or hub 26 may be of any constructlon common to locks and is adapted to receive the key 27 by means of which the lock is opened.

cking positi'on it is hel in Isi 0 be'l understood that the valve cas ing and the lock casing may be of any relative formation and for convenience the same are indicated as being separately formed andiadapted to be secured in any manner. Obviously, these parts may be of ordinary structure.

the carbureter. When the engine is at rest and the machine unattended, the valve 5 is closed and is locked against unauthorized operation by means of the lug 15 and the bolt 16. When the key 27 is introduced into the lock and turned to the left the first movement is to shift the bolt 19 to the right by the end of the nib 25 riding upon the beveled extremity of the bolt 19. The next operation is a longitudinal movement of the bolt 16 by engagement of the nib 25 with the projection 24. The bolt 19 is held during the entire movement of the bolt 16 until the beveled end 21 engages the beveled end of the bolt 19 and a continuing movement of the bolt 16 causes the beveled end of the bolt 19 to ride upon the beveled end 21 of the bolt 16 whereby the bolt 19 is moved so as to admit of disengagement of the bolt 16 from the valve and after the bolt 16 has cleared the groove lathe valve 5 is drawn into open position by the action of the spring 11 which holds the same open until the valve is again closed by positive manipulation thereof. The lug 15 besides'serving as means to lock the valve against movement in one direction, also serves as means to limit the throw of the valve in each direction.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent, is

1. In combination with a bolt, a second bolt normally in looking engagement with the main bolt, and a key operated member having a nib for engaging the secondary bolt and imparting an initial movement thereto and subsequently engaging the main bolt for throwing the same, the secondary bolt The combined lock and valv is located in the line of pipe supplying fue to being continuedin its movement by engagement with the main bolt.

2. Valve locking means of the character specified comprising a main bolt, a secondary bolt adapted to lockingly engage the main bolt, coacting inclined surfaces be tween the two bolts, -and a key operated member having a projection for imparting an initial movement to the secondar bolt, and a releasing movement to the mam bolt whereby the coacting inclines of the two bolts are brought into active operation to continue the' movement of the secondary bolt by the movement of the main bolt when said secondary bolt is free of the projecting part of the key operated member.

3. In locking means of the character specifled, a main bolt having a lateral projection, a secondary bolt in looking engagement with the main bolt and limited in its forward movement by said lateral projection, coacting inclines between the two bolts and a key operated member havlng' a pro ection to 1111- part. an initial movement to the secondary bolt to bring it into position to be engaged by the incline of the main bolt when the latter is moved by said key operated member.

4:. In locking mechanism of the character specified, a main bolt having a transverse opening and having one end of the opening inclined, a lateral projection on the main bolt adapted to overhang the opening there of, a secondary bolt adapted to pass through the opening of the main bolt and limited in its movement by the lateral projection, and a key operated member having a nib to move the secondary bolt and subsequently impart movement to the main bolt whereby the same may be disengaged from the part to be locked.

In testimony whereof I aflix my signature in presence of two witnesses.

LYLE PETERS. lVitnesses:

C. B. MoCoY, C. E. BUSEY. 

